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If your dog has eaten macadamia nuts, contact your vet now — do not wait for symptoms.
Symptoms typically appear 3–12 hours after ingestion. Early treatment (within 4 hours) is most effective.
Emergency Toxicity Calculator
Macadamia Nut Toxicity Calculator for Dogs
Macadamia nuts are toxic to dogs even in small amounts. The exact mechanism is unknown. Any ingestion should be reported to your vet immediately.
Approximate reference sizes
1 whole nut: ~2.5g (0.09 oz)
Small handful: ~15g (0.53 oz)
Large handful: ~30g (1.06 oz)
¼ oz: ~7g (0.25 oz)
1 oz: ~28g (0.99 oz)
hours ago
If unsure, estimate. Early intervention is critical.
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